Abstract
Power supply system made of asynchronous motor-synchronous generator sets (M-G sets) is often used as power supply for important loads. The system usually consists of two M-G sets. Unlike synchronous generators connecting to large power grid, the two generators in the system can have significant effect on the other when field loss fault occurs. If the protection settings are inappropriate, the two generators may trip one after another during a fault on a single generator, causing the important load losing all the power supply. This paper proposed a simulation and protection verification method based on the RTDS digital modelling for M- G sets including detailed excitation system. The modelling and simulation methods can effectively verify the reasonability of settings of the P-Q restriction of the excitation regulator and the PID controllers, and provide the important basis for the setting of over-current protection and loss of excitation protection, ensuring the safe operation of the power supply system made of M-G sets.
Highlights
A good excitation system can ensure high-quality power and the reliability and stability of generator operation, and effectively improve the technical and economic indicators of generator and its related power system
There are many researches on field loss and field loss protection for large generator sets connecting to large power grid [18]
For some important equipment in power plants, short-term power loss of some important facilities may lead to a series of unpredictable consequences such as unnecessary unit tripping and grid frequency collapse, so some power plants use asynchronous motor synchronous generator (M-G) sets to supply power to important loads
Summary
A good excitation system can ensure high-quality power and the reliability and stability of generator operation, and effectively improve the technical and economic indicators of generator and its related power system. The short-term power failure may lead to the power loss of important loads and pose a major threat to the safety of equipment and personnel. For some important equipment in power plants, short-term power loss of some important facilities may lead to a series of unpredictable consequences such as unnecessary unit tripping and grid frequency collapse, so some power plants use asynchronous motor synchronous generator (M-G) sets to supply power to important loads. Unlike large generator connecting to power grid, for the parallel operation of M-G sets, there are problems such as over-current protection and loss of field protection coordination, P-Q restriction and loss of field protection coordination between two M-G sets. This paper will introduce the modelling and simulation method designated to verify the settings of various Protection of synchronous machine
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
